Preheat oven to 375 degrees F.
In a large bowl, combine the shallots, green beans, carrots, 1 Tablespoon lemon zest, half the olive oil, salt & pepper.
Stack 2 sheets of parchment paper together, and repeat with the remaining paper so that you have 4 stacks of paper.
Place 1/4 of the vegetable mixture in the center of 2 stacked sheets of parchment paper.
Top vegetable mixture with a 4 ounce portion of wild cod.
Brush each cod portion with remaining olive oil and lemon zest, then sprinkle with remaining salt & pepper.
Create a packet by folding opposite ends together, then roll the two remaining ends to create a seal.
Place packets on a rimmed baking sheet and place in preheated oven.
Bake for 18 minutes, then remove from oven and open packets. Fish should flake easily with a fork. If it isn't done, re-seal packet and place back in oven for another 2-5 minutes.
Serve immediately.